One of the unintended negative consequences of online advertising has been the loss of value in traditional classifieds. It's simply quicker, simply easier for an end user who's online, on a broadband connection, to look things up and to figure out what they want to buy.

Amazon has well passed any expectations of its ability to change distribution and marketing.

Google is very much a not-invented-here, build-it-ourselves culture.

We want to make sure the thing you're looking for is on Google 100 percent of the time.

For those who say you're thinking too big... be smart enough not to listen. For those who say the odds are too small ... be dumb enough to give it a shot. And for those who ask, how can you do that?... look them in the eyes and say, I'll figure it out.

We don't have a traditional strategy process, planning process like you'd find in traditional technical companies. It allows Google to innovate very, very quickly, which I think is a real strength of the company.

Find a way to say yes to things. Say yes to invitations to a new country, say yes to meet new friends, say yes to learning a new language, picking up a new sport. Yes is how you get your first job, and your next job, and your spouse, and even your kids. Even if it's a bit edgy, a bit out of your comfort zone, saying yes means that you will do something new, meet someone new, and make a difference in your life. Yes lets you stand out in a crowd, be the optimist, to stay positive, be the one everyone comes to. Yes is what keeps us all young.